YASA (Yet Another Spindle Algorithm) is a sleep analysis toolbox in Python. YASA includes several fast and convenient command-line functions to: Perform automatic sleep staging. Detect sleep spindles, slow-waves, and rapid eye movements on single and multi-channel EEG data. Reject major artifacts on single or multi-channel EEG data. Perform advanced spectral analyses: spectral bandpower, phase-amplitude coupling, event-locked analyses, 1/f, and more! Manipulate hypnogram and calculate sleep statistics.